72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* MD primitives supporting placement of module data
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*
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* XXX should check load address/size against memory top.
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*/
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#include <stand.h>
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#include <machine/alpha_cpu.h>
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#include "libarc.h"
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/*
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* Convert from a 64bit superpage address to a 32bit arc superpage address.
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*/
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static void *
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convert_superpage(vm_offset_t p)
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{
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if (p < ALPHA_K0SEG_BASE || p >= ALPHA_K0SEG_END) {
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printf("stupid address %p\n", (void *)p);
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panic("broken");
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}
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return (void *) (0xffffffff80000000 + (p - ALPHA_K0SEG_BASE));
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}
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int
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arc_copyin(void *src, vm_offset_t dest, size_t len)
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{
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bcopy(src, convert_superpage(dest), len);
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return(len);
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}
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int
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arc_copyout(vm_offset_t src, void *dest, size_t len)
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{
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bcopy(convert_superpage(src), dest, len);
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return(len);
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}
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int
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arc_readin(int fd, vm_offset_t dest, size_t len)
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{
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return(read(fd, convert_superpage(dest), len));
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}
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